Sand bailer



Oct. 12, 1943.

M. F. ROGERS ETAL SAND BAILER Filed July 18, 1941 Patented Oct. 12, 1943 'y SAND BAILER v Martin F. Rogers and Lloyd T. Mann,

i Seven Sisters, Tex. I

' Application July 18, 1941, Serial No. 402,974

- i claims. (ci. les-i9)l rlhis `invention relates to a bailer andhas particular relation t a tool of the character described particularly useful for bailing sand from wells.

An object of the invention is toprovide a bailer of the character described whichis vadapted to be let down into the well by a wire line and manipulated therein to pump a load of sand into the bailer and then be withdrawn to the ground surface for unloading.

in one form of the invention fluid under pressure may be 'entrapped within the tool and utilized at the ground surface for discharging the load from the bailer. v

Another object of theinvention is to provide in a baileroi the character described novel entrapping means for entrapping a load of sand or other detritus as well as for entrapping a charge of iiuid under pressure to be later utilized at the ground surface for discharging the load.

With the above and other objects in view the in' ention has particular relation to certain novel features of construction, operation and arrangement of parts, examples of which are given in this specification and illustrated in the accompanying drawing, wherein:

Figure l shows a vertical, sectional View of the bailer.

Figure 2 shows a cross-sectional View taken on ie line 2--2 of Figure 1.

Figure 3 shows a vertical, sectional, view of the lower end of the barrel showing the unloading valve in open position, and

Figure 4 shows a side elevation, partly in sectien, of another embodiment of the bailer.

Referring now more particularly to the drawing wherein like numerals of reference designate the same parts in each of the gures, the numeral I designates the barrel. n the present illustration, it is shown formed of two sections screwed together. The lower end of the barrel has a side discharge opening 2 which is normally closed by an inside sleeve valve 3. This sleeve valve is normally held in closed position by means of a pin or stud 4 projecting outwardly from said valve and seated in the laterally turned end of the inverted J.-slot 5.

The sleeve valve is held against disengagement from the barrel by the interengaging `ilanges 6, l, the former of which is an external flange on the upper end of the valve 3 and the latter of which is an inwardly extended flange v on the lower end of the barrel I beneath the opening 2.

The lower end of the sleeve valve 3 has an inlet opening 8' which is `controlled by anupwardly opening flap'valve.

Fitted over the upper end'of the barrel there is a cylinder II whose lower end is in sealed engagement with the barrel. The upperrend of `thiscylinder is closedby the hollow head II to the upper end of which a wire line may be attached for lowering'the bailer intojthe well.

Screwed into the cylinder I0 beneath the head II there is a plug -I Ia and attached toand depending frorn this plug there is a Valvecstem l2 to the lower end of which` the upwardly tapering valve I3 is secured whichjcooperateswith the tapering seat I4 in-the upper end of the barrel. Q

When thebailer lands on bottom the cylinder may be reciprocated up and down so as to draw a load of sand into the barrel past the valve I2, the liquid and l, air vabove the valve I3 being pumped out through the duct I5 of the plug' I Id past the upwardly opening ball valve I6 and out through the ducts II of the head II- v The valve I6 cooperates with an annular valve seat vI 3 having an external annuluar flange which is clamped between the head I i and the plug I Ia.

When the barrel is lled with sand it may be withdrawn to the ground surface and the sleeve valve 3 turned to carry the stud Il out of the laterally turned end of the J-slot 5 thus permitting the 'sleeve Valve 3 to drop down to open the `discharge port 2 so .as to allow the load oi sand to escape from the barrel I.

A coil spring I9, around the barrel I and seated on the lower Ysection thereof acts asa bumper during the reciprocation of the barrel i0. In the embodiment illustrated in Figure 4 a disc 2li is substituted for the valve seat I8 to prevent the escape of any uid under pressure.

In this form there is an annular stop 2I secured on the upper section of the barrel I and interposed between this stop and the lower end of the cylinder I0 there is a coil spring 22. y

This form of the bailer may be used where there is high pressure in the well. When it is lowered into the well the valve I3, Figure 4, is held closed by the spring 22 and when it rlands on bottom thecylinder III may be lowered to vcause the Valve I3 to open and the pressure in -to trap said gesunder pressure andwill be held closed by the spring 22 and the sand and water will lill the barrel I.

When the bailer is withdrawn to the ground surface the sleeve valve 3 may be opened, as above, to open the discharge port 2 and the cylinder l 0 may then be forced downwardly to open the valve I3 and the pressure in the cylinder will operate to discharge the contents of the barrel I through the pehlig 2.

The drawing and description are illustrative merely while the broad principle of the invention will be defined by the appended claims.

What we claim is:

1. A bailer for wells comprising a tubular barrel for the reception of material from the well and having an unloading opening, and an unloading valve controlling said opening, an inlet valve at the lower end of the barrel 'for entrapping said material, means normally holding the unloading valve in position to close said opening and releaSable to allow the unloading valve to move to open position, `a cylinder reciprocable on. the barrel, said barrel being provided with a valveiseat, a stem attached to the cylinder and extended ilfltotlie barrel, a pressure retaining valve oh the stem and arranged to engage and disengage the valve' seat for controlling communication between the interior of the barrel and cylinder, said cylinder having a chamber around the s'tem for the reception ofwiiuid under pressure from the well available to eiect discharge of the load in the barrel when the unloading valve is opened and Said pressure retaining valve is moved away from its seat.

2. A bailer for wells comprising a tubular barrel whose upper end is provided with an upwardl'y converging seat, a cylinder reciprocable on the barrel and having a oharnber for the ecep tion of fluid from the barrel, a valve rod connected to the cylinder at its upper end and whose lower end is extended into the barrel and formed into a valve adapted to contact and close said seat when the cylinder is in its upper position and to open the seat when the cylinder is in its lower position to allow fluid to flow from the barrel into the cylinder around said rod.

3. A bailer for wells comprising a tubular barrel whose upper end is provided with an upwardly converging seat, a cylinder reclprocable on the barrel and having a chamber for the reception of uid from the barrel, a valve rod connected to the cylinder at its upper end and whose lower end is extended into the barrel and formed into a valve adapted to contact and close said seat when the cylinder is in its upper position and to open the seat when the cylinder is in its lower position to allow liuid to flow from the barrel into the cylinder around said rod, said cylinder having a valve controlled outlet passageway permitting escape of fluid from said chamber'.

4. A bailei' for wells comprising a tubular barrel whose upper end is provided with an upwardly converging seat, a cylinder reciprocable o'n the barrel and having a chamber for the reception of iluid from the barrel, a valve rod connected to the cylinder at its upper end and whose lower end is extended'into the barrel and formed into a valve adapted to Contact and close said'seat when the cylinder is in its upper position 'and' to open the seat when the cylinder is in its lower position to allow fluid to ow from the barrel into the cylinder 'around said rod and yieldable means on the barrel arranged to be compressed by the cylinder when the latter is moved to its lower position.

MARTIN F. ROGERS. LLOYD 'Il MANN. 

